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Confirmed cases of the novel coronavirus exceeded 300,000 worldwide, according to the Johns Hopkins tracker on Saturday, and 20,000 in the United States, according to a Washington Post count, as states ramp up restrictions on their citizens’ movements. Also, the United States has surpassed 300 total deaths from the virus, according to The Post count.

Here are some significant developments:

  • House Speaker Nancy Pelosi, Senate Majority Leader Mitch McConnell, Senate Minority Leader Charles E. Schumer and House Minority Leader Kevin McCarthy will meet Sunday morning in McConnell’s office to discuss a massive coronavirus economic rescue plan.
  • Vice President Pence and his wife, Karen, tested negative for the coronavirus, his spokeswoman announced Saturday night. During Saturday afternoon’s White House briefing, Pence said the pair would be tested after a member of his staff had tested positive.
  • The Justice Department has asked Congress to give the Supreme Court’s chief justice broad authority to suspend the statute of limitations for criminal cases during a national emergency.
  • Major flight restrictions were imposed at key airports along the East Coast, including in Washington, after an air traffic controller trainee tested positive for covid-19 Saturday.
  • Anthony S. Fauci, director of the National Institute of Allergy and Infectious Diseases, said, "I’m not totally sure what the president was referring to,” when asked about an hours-earlier tweet by President Trump that claimed the FDA was working on a combination of an anti-malaria drug and an antibiotic that could treat the infection.
  • The Food and Drug Administration approves new test that can detect the coronavirus in about 45 minutes.
  • President Trump’s top economic adviser said a rescue package could ultimately inject more than $2 trillion into the economy.